CN112984661B - Air cooler capable of resisting severe summer heat and severe cold weather - Google Patents
Air cooler capable of resisting severe summer heat and severe cold weather Download PDFInfo
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- CN112984661B CN112984661B CN202110337465.6A CN202110337465A CN112984661B CN 112984661 B CN112984661 B CN 112984661B CN 202110337465 A CN202110337465 A CN 202110337465A CN 112984661 B CN112984661 B CN 112984661B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/81—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the air supply to heat-exchangers or bypass channels
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air cooler capable of resisting severe summer and cold weather, comprising: a shutter is arranged above the shell; the fan is arranged in the shell, and an air outlet of the fan faces the shutter; the water-receiving filler wall is positioned below the fan, arranged on the side wall and/or the bottom of the shell and provided with a plurality of ventilation holes penetrating through the front surface and the rear surface; the water spraying pipe is arranged adjacent to the water-receiving filler wall, the water spraying area of the water spraying pipe covers the vent hole, one end of the water spraying pipe is connected with an external water supplementing mechanism, and a circulating pump is arranged on the water spraying pipe; the heat exchange tube is arranged between the fan and the louver; and the temperature transmitter is arranged close to the water-receiving filler wall and is in communication connection with a DCS (distributed control system) which is in communication connection with the circulating pump. The environment-friendly solar water heater can meet the requirements of use in high-temperature environment, normal-temperature environment and low-temperature environment, occupies small space, can adapt to various process environments, can be used in various seasons, and has good application prospect and application range.
Description
Technical Field
The invention relates to the technical field of temperature adjusting mechanical equipment, in particular to an air cooler capable of resisting severe summer and cold weather.
Background
At present, the climate of partial domestic provinces has the climate characteristics of large temperature difference between winter and summer and large temperature difference between day and night, and compared with the above climate, the existing air cooler has the following problems:
1. the design of the dry-type air cooler generally takes the annual average temperature as design data, and the environmental temperature is far higher than the average temperature in a high-temperature state in summer, so that the cooling capacity of the air cooler is insufficient, and the process requirements cannot be met;
2. if the high temperature is used as the design data of the air cooler, the volume of the air cooler is generally larger, and a larger floor area is needed;
3. the dry air cooler cannot realize the supercooling prevention operation in winter; the hot air circulating air cooler can realize supercooling prevention operation, but is complex in structure, large in size and low in heat exchange efficiency.
In view of the above, how to provide an air cooler that solves all or part of the above technical problems is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The present invention aims to solve at least to some extent one of the above-mentioned technical problems of the prior art.
To this end, an object of the present invention is to provide an air cooler capable of resisting severe summer heat and cold weather, comprising:
the shutter is arranged above the shell;
the fan is arranged in the shell, and an air outlet of the fan faces the shutter;
the water-receiving filler wall is positioned below the fan, arranged on the side wall and/or the bottom of the shell and provided with a plurality of ventilation holes penetrating through the front surface and the rear surface;
the water spraying pipe is arranged adjacent to the water-receiving filler wall, a water spraying area of the water spraying pipe covers the vent hole, one end of the water spraying pipe is connected with an external water supplementing mechanism, and a circulating pump is arranged on the water spraying pipe;
the heat exchange tube is arranged between the fan and the shutter;
and the temperature transmitter is arranged close to the water-receiving filler wall and is in communication connection with a DCS (distributed control system), and the DCS is in communication connection with the circulating pump.
The invention has the beneficial effects that: the design data of the air cooler is converted from the daily average dry bulb temperature which is not guaranteed for five days in local summer every year into the local maximum wet bulb temperature and the insurance allowance all the year round; the water is sprayed to the water-receiving filler wall through the water spraying pipe, so that a water film is formed in the air vent, the humidity of air entering the air cooler through the air vent can reach 85 percent, meanwhile, the air can be rapidly cooled, and the air is blown to the heat exchange pipe through the fan to be further subjected to heat exchange and then is discharged through the shutter, so that the process requirement at high temperature in summer can be met; meanwhile, the DCS system can control the circulating pump to control the water spraying amount of the water-receiving filler wall and control the start and stop of the water spraying pipe, so that the temperature of air flowing into the air cooler can be automatically adjusted.
In the technical scheme, the fan and the heat exchange pipe are designed according to the calculation method of the conventional dry air cooler.
In the technical scheme, the temperature transmitter converts a temperature signal into a (4-20 mA) electric signal and sends the electric signal to the DCS, the DCS judges the start and stop control of the circulating pump, the temperature value in a lower air chamber (the position of air entering the air cooler through an air vent is the lower air chamber, and the position between a heat exchange pipe and a shutter is the upper air chamber) can be further set, or the temperature of a medium outlet is simultaneously input, the system controls the decision according to a PID mode, a control signal (4-20 mA) is output to the frequency converter, and the frequency converter adjusts the rotating speed of the circulating pump, so that the water spraying amount of the water-receiving filler wall is controlled.
Furthermore, the water-receiving filler wall can be made of a conventional cooling tower filler or a wet curtain wall filler, the configured outline area (namely the circumference multiplied by the height) is more than or equal to 1.2 times of the outline area of the heat exchange tube so as to prevent liquid water from being entrained due to too high wind speed, and the internal structure and thickness value of the proper filler are selected to meet the requirements that the aerodynamic resistance is less than or equal to 30Pa and the relative humidity of air passing through the water-receiving filler wall is more than 85 percent.
Further, the fans include at least two fans, at least one fan can be reversed, and the blade angle of each fan can be reversed by 180 degrees.
The beneficial effect of adopting above-mentioned technical scheme is: in winter or in an environment with low temperature, the louver can be closed or slightly opened, and meanwhile, the turning direction of part of the fans is adjusted or the air outlet direction of the fans is adjusted, so that air can realize self circulation in the air cooler, and the supercooling prevention operation of the air cooler is completed.
Furthermore, the heat exchanger further comprises a separation window, the separation window is positioned between the louver and the heat exchange tube, one end of the separation window extends towards the direction of the louver, the other end of the separation window extends towards the direction of the heat exchange tube, and the opening and closing angle of the separation window can be adjusted through the separation window.
Preferably, the separation window is located between two adjacent fans.
Furthermore, the water storage tank is arranged below the water-receiving filler wall, one end of the water storage tank is communicated with the water spraying pipe, and the other end of the water storage tank is communicated with the external water supplementing mechanism.
The beneficial effect of adopting above-mentioned technical scheme is: the water spraying pipe is sprayed behind the water-receiving filler wall, a part of water forms a water film at the ventilation hole, the rest of water flows into the water storage tank along the surface of the water-receiving filler wall, and then is introduced into the water spraying pipe for secondary use by the circulating pump, so that water circulation is realized.
Further, still include the governing valve, the governing valve sets up on the trickle pipe and with DCS system communication connection.
In the technical scheme, a frequency converter is not used, and the connecting pipeline is provided with a regulating valve to regulate the water spraying amount by receiving a control signal (4-20 mA), so that the temperature of air flowing into the lower air chamber is automatically regulated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of an air cooler in a high temperature mode;
FIG. 2 is a schematic view of an alternative air cooler configuration in high temperature mode for protection against summer heat and cold weather;
FIG. 3 is a schematic view of an air cooler in a low temperature mode;
FIG. 4 is a schematic view of an alternative air cooler configuration in low temperature mode for protection against summer and cold weather;
the system comprises a shutter 1, a separation window 2, an upper air chamber 3, a heat exchange pipe 4, a water spraying pipe 5, a first fan 6, a water receiving filler wall 7, a temperature transmitter 8, a support platform 9, a circulating pump 10, a water storage tank 11, a water supplementing mechanism 12, a connecting water pipe 13, a second fan 14, a first adjusting structure 15 and a second adjusting mechanism 16.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The embodiment of the invention discloses an air cooler capable of resisting severe summer and cold weather, which comprises:
the device comprises a shell, wherein a shutter 1 is arranged above the shell;
the fan is arranged in the shell, and an air outlet of the fan faces the shutter 1;
the water-receiving filler wall 7 is positioned below the fan, arranged on the side wall and/or the bottom of the shell and provided with a plurality of ventilation holes penetrating through the front surface and the rear surface;
the water spraying pipe 5 is arranged adjacent to the water-receiving filler wall 7, the water spraying area of the water spraying pipe 5 covers the vent hole, one end of the water spraying pipe 5 is connected with an external water supplementing mechanism 12, and the water spraying pipe 5 is provided with a circulating pump 10;
the heat exchange tube 4 is arranged between the fan and the louver 1;
and the temperature transmitter 8 is arranged close to the water-receiving filler wall 7 and is in communication connection with a DCS (distributed control system) which is in communication connection with the circulating pump 10.
In some embodiments, the fans include at least two, at least one of which is reversible and whose blade angle is reversible by 180 °.
In some embodiments, the heat exchanger further comprises a separation window 2, the separation window 2 is located between the louver 1 and the heat exchange tube 4, one end of the separation window extends towards the louver 1, the other end of the separation window extends towards the heat exchange tube 4, and the opening and closing angle of the separation window 2 can be adjusted.
In some embodiments, the separation window 2 is located between two adjacent fans.
In some embodiments, the water storage tank 11 is further included, and the water storage tank 11 is disposed below the water-receiving filler wall 7, and one end of the water storage tank is communicated with the water spraying pipe 5, and the other end of the water storage tank is communicated with the external water replenishing mechanism 12.
In some embodiments, a regulating valve is further included, and the regulating valve is arranged on the water spraying pipe 5 and is in communication connection with the DCS system.
Example 1 (high temperature environment mode of air cooler)
As shown in fig. 1, in this embodiment, the water-receiving filler walls 7 are disposed on the side walls of the housing on the left and right sides of the lower plenum, the bottom of the lower plenum is a supporting platform 9, two fans are disposed, the left side is a first fan 6, the right side is a second fan 14, the first fan 6 and the second fan 14 are symmetrically disposed, and the partition window 2 is located between the shutters 1 corresponding to the first fan 6 and the second fan 14; the upper parts of the water-receiving filler walls 7 on the two sides are respectively provided with a water spraying pipe 5, and the water spraying pipes 5 on the two sides are communicated through a connecting water pipe 13;
the specific working process is as follows:
the louver 1 positioned above the upper air chamber 3 is completely opened, the separation window 2 is completely closed, the first fan 6 and the second fan 14 rotate positively, and the air direction is upward;
starting a circulating pump 10, spraying water by a water spraying pipe 5, wetting a water-receiving filler wall 7, enabling the water-receiving filler wall 7 to be of a honeycomb structure (a plurality of air vents) to form a large-area water film, enabling peripheral air to transversely penetrate through the air vents of the water-receiving filler wall 7, enabling the air to be evaporated by friction of the air and the water film, enabling the air to enter a lower air chamber after being cooled, blowing the air to a heat exchange tube 4 under the action of a fan, and then discharging the air into the air through a shutter 1; the air passing through the water-receiving filler wall 7 is reduced from the dry bulb temperature to the temperature close to the wet bulb temperature, and the process requirement under the high-temperature environment is met.
In the present embodiment, the opening and closing of the louver 1 can be adjusted by the first adjusting mechanism 15, and the opening and closing of the partition window 2 can be adjusted by the second adjusting mechanism 16.
Example 2 (alternative high temperature environment mode of air cooler against summer and cold weather)
In this embodiment, the bottom of the bottom air compartment is also provided with a water-receiving filler wall 7, a support platform 9 is arranged below the water-receiving filler wall 7 at the bottom, a certain gap is left between the water-receiving filler wall and the support platform, so that air can enter the bottom air compartment from the bottom, and the rest of the structure is the same as that in embodiment 1.
In the embodiment, a water spraying pipe 5 is horizontally arranged above the bottom water-receiving filler wall 7 and is communicated with the water spraying pipes 5 on two sides through a connecting pipe 13.
Example 3 (air cooler normal temperature mode)
As shown in fig. 1 or fig. 2, when the air is not required to be cooled, the circulation pump 10 may be turned off, so that the water-receiving filler wall 7 no longer forms a water film, and at this time, it is only necessary to ensure that the louver 1 is completely opened, the partition window 2 is in a closed state, and the first fan 6 and the second fan 14 operate normally.
Example 4 (Low ambient temperature mode of air cooler)
As shown in fig. 3, in a low-temperature environment, the louver 1 is completely or moderately closed, the partition window 2 is completely opened or moderately opened, the upper air chamber 3 is communicated from left to right, the first fan 6 keeps in a constant state and blows air upwards, the installation angle of the blades of the second fan 14 is turned over by 180 degrees, the second fan 14 is turned reversely, the second fan 14 blows air downwards, the first fan 6 blows air upwards, and the two fans cooperate to form hot air circulation of the upper air chamber 3 and the lower air chamber, so that supercooling is prevented.
In this embodiment, the first fan 6 and the second fan 14 have the same number of blades, airfoil shape, blade width, and the same rotation speed, at least one of the two fans can adjust the blade angle by 180 ° and can reverse, the two fans have the same wind pressure, wind volume, and efficiency, and the upward wind supply and the downward wind induction are completely matched.
The principle of preventing the supercooling of the air cooler is as follows:
the first adjusting mechanism 15 is adjusted to change the opening of the louver 1, and the amount of the cold air to be supplied can be adjusted, so that the temperature of the circulating air can be adjusted. Because the left part and the right part of the louver 1 are the same, the opening degree is the same, and a plurality of functional relations of cold air volume adjustment are realized: the hot air discharge amount = the cold air supply amount, and the pressure drop across the louver 1 when the hot air is discharged = the pressure drop across the louver 1 when the cold air is supplied = the pressure drop across the partitioning window 2 when the internal circulation air is supplied. From the functional relationship, one can derive: adjusting the opening degree of the division windows 2 can also adjust the amount of cold air supply and the amount of warm air discharge. The cold-resistant mode can also realize automatic control: the temperature transmitter 8 in the lower wind chamber converts the temperature signal into (4-20 mA) electric signal and sends the signal to the DCS system, the DCS system judges and decides the cold air supply amount, further can set the temperature value of the circulating air in the wind chamber, or simultaneously inputs the medium outlet temperature, the system controls the decision according to the PID mode, outputs the control signal (4-20 mA) to the first adjusting mechanism 15, the window adjusting mechanism of the louver 1 is provided with a straight stroke or an angular stroke executing mechanism, adjusts the opening of the louver 1, controls the cold air supply amount and the hot air discharge amount, and realizes the temperature control of the circulating air.
In this embodiment, the first adjusting mechanism 15 is configured with a stepping motor, and the DCS system outputs a digital signal to the stepping motor to control the amount of the cold air to be supplied, thereby achieving automatic adjustment of the temperature of the circulating air. Similarly, the DCS system can control the second adjusting mechanism 16 in the same manner to adjust the opening and closing of the separation window 2.
Example 5 (alternative Low ambient mode of air cooler against summer and severe weather)
In this embodiment, the air cooler structure is the same as that of embodiment 2, and the supercooling preventing operation is the same as that of embodiment 4.
Compared with the existing air cooler, the air cooler capable of resisting severe summer heat and severe cold weather can simultaneously meet the requirements of use in high-temperature environment, normal-temperature environment and low-temperature environment, adopts the supercooling-preventing operation as the internal circulation of the air cooler, occupies small space integrally, can adapt to various process environments, can be used in various seasons, and has good application prospect and application range.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (6)
1. An air cooler capable of resisting severe summer heat and cold weather, comprising:
the shutter is arranged above the shell;
the fan is arranged in the shell, and an air outlet of the fan faces the shutter;
the water-receiving filler wall is positioned below the fan, arranged on the side wall and/or the bottom of the shell and provided with a plurality of ventilation holes penetrating through the front surface and the rear surface;
the water spraying pipe is arranged adjacent to the water-receiving filler wall, a water spraying area of the water spraying pipe covers the vent hole, one end of the water spraying pipe is connected with an external water supplementing mechanism, and a circulating pump is arranged on the water spraying pipe;
the heat exchange tube is arranged between the fan and the shutter;
the temperature transmitter is arranged close to the water-receiving filler wall and is in communication connection with a DCS (distributed control system), and the DCS is in communication connection with the circulating pump;
the water-receiving filler wall is made of cooling tower filler or wet curtain wall filler, the outline area of the water-receiving filler wall is larger than or equal to 1.2 times of the outline area of the heat exchange tube, the outline area, namely the circumference, is multiplied by the height, the aerodynamic resistance of the water-receiving filler wall is smaller than or equal to 30Pa, and the relative humidity of air after passing through the water-receiving filler wall is larger than 85%.
2. An air cooler for summer and cold weather according to claim 1, wherein said fans are at least two, at least one of which is reversible and the angle of the blades of which is reversible by 180 °.
3. The air cooler capable of resisting summer heat and severe cold weather according to claim 2, further comprising a separation window, wherein the separation window is positioned between the louver and the heat exchange tube, one end of the separation window extends towards the louver, the other end of the separation window extends towards the heat exchange tube, and the opening and closing angle of the separation window can be adjusted.
4. The air cooler of claim 3, wherein the partition window is located between two adjacent fans.
5. An air cooler according to any one of claims 1 to 4, further comprising a water storage tank, wherein the water storage tank is arranged below the water-receiving filler wall, and one end of the water storage tank is communicated with the water spraying pipe, and the other end of the water storage tank is communicated with the external water supply mechanism.
6. The air cooler of any one of claims 1-4, further comprising a control valve disposed on the shower and communicatively connected to the DCS system.
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| CN202110337465.6A CN112984661B (en) | 2021-03-30 | 2021-03-30 | Air cooler capable of resisting severe summer heat and severe cold weather |
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| CN202110337465.6A CN112984661B (en) | 2021-03-30 | 2021-03-30 | Air cooler capable of resisting severe summer heat and severe cold weather |
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| CN112984661B true CN112984661B (en) | 2022-12-30 |
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